Padding sheet formed of a mixture of fibers bonded at their inte

Details Padding sheet formed of a mixture of fibers bonded at their inte Padding sheet formed of a mixture of fibers bonded at their inte

1980-02-19

1981-10-20

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428296, D04H 158

Patent

active

042961688

ABSTRACT:
The mixture of fibers forming a relatively dense, thick, non-woven matted padding sheet are bonded together by means of incorporating a minor proportion of loose, relatively low heat softening point, polypropylene fibers in the mixture and momentarily heating the matted sheet sufficiently to momentarily soften the polypropylene fibers so that they adhere to the other fibers at their points of intersection therewith. Thus, the overall mixture of fibers are bonded together by the randomly extending polypropylene fibers.

REFERENCES:
patent: 3620892 (1971-11-01), Wincklhofer et al.
patent: 3639195 (1972-02-01), Sanders
patent: 3801428 (1974-04-01), Striegler et al.
patent: 4128679 (1978-12-01), Pohland

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